html
{
    font-size: 20px;
    font-family: 微软雅黑;
}

body
{
    padding: 0;
    margin: 0;
    font-family: 微软雅黑;
}

.bg
{
    margin: 0 auto 50px auto;
    font-family: 微软雅黑;
}

.msgtip
{
    color: white;
    font-size: 18px;
    margin-top: 10px;
    margin-bottom: 10px;
}

.middle
{
    margin: 0 auto;
    font-size: 20px;
    font-family: 微软雅黑;
}

.mask-float-div
{
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0px;
    left: 0px;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1988;
}

.display-none
{
    display: none;
}